Question 5 If one isolated cells at random from an organism at different times i

Question

Question 5

If one isolated cells at random from an organism at different times in its development and measured developmental potential as the average number of distinct cell types that the cells could differentiate into, which of the curves shown here would MOST likely result?

Curve M

Curve K

Curve H

Curve Q

2. When the Pax6 transcription factor is transferred from a donor individual of one species into the genome of a recipient individual of a different species, it:

usually has no detectable effect.

represses eye development.

induces the development of eyes similar to those in the donor species.

induces the development of eyes similar to those in the recipient species.

Please help!!

Curve M

Curve K

Curve H

Curve Q

Time Biology: How Life Works, Second Edition © 2016 W.H. Freeman and Company

Explanation / Answer

1.

Development potential of cell decrease with respect to time.

Hence, the correct option is (b) Curve K

2.

When the Pax6 transcription factor is transferred from a donor individual of one species into the genome of a recipient individual of a different species, it induces the development of eyes similar to those in the recipient species.

Hence, the correct option is induces the development of eyes similar to those in the recipient species.

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